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Bilstein B14 (PSS) vs Bilstein B14: Anyone know the specific differences?

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#1
All I can seem to find is that one is for the regular Fiesta/Mazda 2 and the other is for the Fiesta ST. Are they interchangeable? is there any performance difference?

I tried searching the Bilstein website for B14's and all it came up with were B14 PSS's for the Fiesta S, SE, and ST.

Sorry if someone has answered this already, I couldn't seem to find it on the forum.
 


OP
DirtyChalupa
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Thread Starter #2
I guess the part number 47-167490 fits the S, SE, Titanium
and the part number 47-242043 fits the ST.
 


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#3
I have the 47-167490 on my ST and the big take away is that at the highest setting the car sits about 2" lower than stock. I did not know what I was getting at the time, but this part number is for a regular Fiesta, not the ST. I have it raised all the way up and still hit the splitter on driveways. The other issue is that originally before I installed the splitter, I had it maybe 1/2" lower and it was smoother to drive. Having it all the way up like I do, it feels like the stock suspension. IMO looks great but now I have to worry about wheel width and and tire sizes not working. I actually found this thread because I was looking for those answers.
IMG_20191006_144056.jpg
 


OP
DirtyChalupa
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Thread Starter #4
I have the 47-167490 on my ST and the big take away is that at the highest setting the car sits about 2" lower than stock. I did not know what I was getting at the time, but this part number is for a regular Fiesta, not the ST. I have it raised all the way up and still hit the splitter on driveways. The other issue is that originally before I installed the splitter, I had it maybe 1/2" lower and it was smoother to drive. Having it all the way up like I do, it feels like the stock suspension. IMO looks great but now I have to worry about wheel width and and tire sizes not working. I actually found this thread because I was looking for those answers.
View attachment 34744
Lol, looks like we're in the same boat.

I contacted bilstein and they said they only carry the B14 PSS version, so that was even more confusing. Lol.

Fuck it, I'll prolly just got with the swift springs, lol. Don't need to be spending 1k right now anyway.
 


ron@whoosh

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#5
All I can seem to find is that one is for the regular Fiesta/Mazda 2 and the other is for the Fiesta ST. Are they interchangeable? is there any performance difference?

I tried searching the Bilstein website for B14's and all it came up with were B14 PSS's for the Fiesta S, SE, and ST.

Sorry if someone has answered this already, I couldn't seem to find it on the forum.
we have both sets in stock
the ST kit allows for lowering the car more and has slightly stiffer spring rates
The standard kit (non-ST) is actually more popular for stock ride height fans
 


kevinatfms

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#7
we have both sets in stock
the ST kit allows for lowering the car more and has slightly stiffer spring rates
The standard kit (non-ST) is actually more popular for stock ride height fans
Hate to tell you but this is incorrect. I went through this with 5 different Bilstein reps and finally got an engineering tech on the line to go over the differences. Here is the spring rates list in a thread from what ive found trying to get a full list on them all:

https://www.fiestastforum.com/threads/spring-rates-h-r-and-others-sth.22499/

Same rates on each kit - same spring part number and all. 274 front progressive rate / 228 rear progressive rate(final rates).

Rear damper is the exact same part number between the two kits.

Front damper is the only different part in the whole kit. Its threaded lower on the shock body and has different valving for the height difference.

Its also the only monotube damper set in the kit. The rear dampers are still a twin tube Bilstein B8 damper.
 


Last edited:
OP
DirtyChalupa
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Thread Starter #8
Hate to tell you but this is incorrect. I went through this with 5 different Bilstein reps and finally got an engineering tech on the line to go over the differences. Here is the spring rates list in a thread from what ive found trying to get a full list on them all:

https://www.fiestastforum.com/threads/spring-rates-h-r-and-others-sth.22499/

Same rates on each kit - same spring part number and all. 274 front progressive rate / 228 rear progressive rate(final rates).

Rear damper is the exact same part number between the two kits.

Front damper is the only different part in the whole kit. Its threaded lower on the shock body and has different valving for the height difference.

Its also the only monotube damper set in the kit. The rear dampers are still a twin tube Bilstein B8 damper.
Thanks, dude. Gonna have a look at that thread.
 


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#9
Hate to tell you but this is incorrect. I went through this with 5 different Bilstein reps and finally got an engineering tech on the line to go over the differences. Here is the spring rates list in a thread from what ive found trying to get a full list on them all:

https://www.fiestastforum.com/threads/spring-rates-h-r-and-others-sth.22499/

Same rates on each kit - same spring part number and all. 274 front progressive rate / 228 rear progressive rate(final rates).

Rear damper is the exact same part number between the two kits.

Front damper is the only different part in the whole kit. Its threaded lower on the shock body and has different valving for the height difference.

Its also the only monotube damper set in the kit. The rear dampers are still a twin tube Bilstein B8 damper.

Bumping this for answers, does this actually make a difference in terms of ride quality at a moderate drop?

Would this mean the ST is favored for going lower and retaining a better ride??
 


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#10
I have the B14 PSS adjusted to halfway on the height and am very happy with the setup. The ride is firm but more controlled than stock. With OEM wheel/tire size I have no rubbing at all, even over the biggest whoop-dee-doos.


IMG_2309.JPEG IMG_2308.JPEG IMG_2307.JPEG
 


Poofies

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#11

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